/*
 * Copyright 2010 jun.enomoto<jun.enomoto@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package foursquare4j.xml.handler;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;

import foursquare4j.type.Category;
import foursquare4j.type.Stats;
import foursquare4j.type.Venue;
import foursquare4j.type.VenueGroup;
import foursquare4j.type.Venues;

public class VenuesHandler extends Handler<Venues> {

	private static enum E {
		_, GROUP, GROUP_VENUE, GROUP_VENUE_PRIMARYCATEGORY, GROUP_VENUE_STATS
	}

	private E e;

	private Venues venues;
	private VenueGroup venueGroup;
	private Venue venue;

	@Override
	public void startDocument() throws SAXException {
		venues = new Venues();
	}

	@Override
	public void startElement(final String uri, final String localName, final String qName, final Attributes attributes) throws SAXException {
		super.startElement(uri, localName, qName, attributes);
		if ("venues".equals(qName) && e == null) e = E._;
		else if ("group".equals(qName) && e == E._) {
			e = E.GROUP;
			venues.put(attributes.getValue("type"), venueGroup = new VenueGroup());
		} else if ("venue".equals(qName) && e == E.GROUP) {
			e = E.GROUP_VENUE;
			venueGroup.add(venue = new Venue());
		}else if("primarycategory".equals(qName) && e == E.GROUP_VENUE) {
			e = E.GROUP_VENUE_PRIMARYCATEGORY;
			venue.setPrimarycategory(new Category());
		} else if ("stats".equals(qName) && e == E.GROUP_VENUE) {
			e = E.GROUP_VENUE_STATS;
			venue.setStats(new Stats());
		}
	}

	@Override
	public void endElement(final String uri, final String localName, final String qName) throws SAXException {
		if ("venues".equals(qName) && e == E._) e = null;
		else if ("group".equals(qName) && e == E.GROUP) e = E._;
		else if ("venue".equals(qName) && e == E.GROUP_VENUE) e = E.GROUP;
		else if("primarycategory".equals(qName) && e == E.GROUP_VENUE_PRIMARYCATEGORY) e = E.GROUP_VENUE;
		else if ("stats".equals(qName) && e == E.GROUP_VENUE_STATS) e = E.GROUP_VENUE;
	}

	@Override
	protected void characters(final String text) throws SAXException {
		switch (e) {
			case _:
				break;
			case GROUP:
				break;
			case GROUP_VENUE:
				set(venue, tag, text);
				break;
			case GROUP_VENUE_PRIMARYCATEGORY:
				set(venue.getPrimarycategory(), tag, text);
				break;
			case GROUP_VENUE_STATS:
				set(venue.getStats(), tag, text);
				break;
		}
	}

	@Override
	public Venues getObject() {
		return venues;
	}
}